Consider the following statements:
In spring season vascular cambium
i. Is less active
ii. Produces a large number of xylary elements
iii. Forms vessels with wide cavities of these,

(a)

(i) is correct but (ii) and (iii) are not correct

(b)

(i) is not correct but (ii) and (iii) are correct

(c)

(i) and (ii) are correct but (iii) is not correct

(d)

(i) and (ii) are not correct but (iii) is correct.

What is the fate of primary xylem in a dicot stem showing extensive secondary growth?

(a)

It is retained in the centre of the axis

(b)

It gets crushed

(c)

May or may not get crushed

(d)

It gets surrounded by primary phloem

Living part of the wood is called __________

(a)

Duramen 

(b)

Heart wood

(c)

Porous wood

(d)

Sap wood

Quinine is obtained from the ____________ of the cinchona tree.

(a)

Root

(b)

resin

(c)

bark

(d)

gum

Gymnosperm wood is known as _______________

(a)

non porous wood

(b)

hard wood

(c)

porous wood

(d)

sap wood

Canada balsam is made from __________

(a)

gum

(b)

tannin

(c)

latex

(d)

resin

Lentieels are seen in ___________

(a)

Phellodenn

(b)

phellem

(c)

phellogen

(d)

epidermis

A bark used as spice ___________

(a)

Pinus

(b)

Cinchona

(c)

Cinnamon

(d)

Morus

Choose the non living cells.
(i) phellem
(ii) phellogen
(iii) phloem 
(iv) xylem vessel

(a)

i and ii

(b)

ii and iv

(c)

all the four

(d)

i and iv

____________ is a fossil resin.

(a)

Gum Arabic

(b)

Amber

(c)

Turpentine

(d)

Latex